
The Most Common Types of Cancer in Pets
Of all of the different types of cancer a dog or cat can develop, skin cancer, or Malignant Skin Neoplasia, is the most common. Other common types of cancers in pets include (listed by prevalence):
Lymphoma
Splenic (Spleen) Cancer
Bone or Joint Cancer
Hepatic (Liver) Cancer
Thoracic (Chest) Cancer
Bladder Cancer
Anal Sac Cancer
Oral Cancer
Brain or Spinal Cord Cancer
How do pets get Cancer?
Cancer develops as a result of damage to the DNA. This damage is most often caused by environmental exposure to carcinogens like tobacco smoke, radiation and pesticides, and can be compounded by risk factors like chronic inflammation and being overweight.

Common Feline Cancers
Lymphoma (associated with feline leukemia virus)
Oral squamous cell carcinoma
Fibrosarcoma